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Like all stars, our sun converts mass into energy which radiates (spherically) in all directions. At the radius of Earth the radiant energy is 1.4 Watts/m^2.
Calculate the rate at which the sun is losing mass Assuming this rate is constant, how long would it be until the sun used up all of it's mass?
What is the magnitude of an electric field in which the electric force on a proton is equal in magnitude to its weight, What must the charge (sign and magnitude) of a particle of mass 1.40g
The Relativistic Heavy Ion Collider (RHIC) at Brookhaven is colliding fully ionized gold (Au) nulcei accelerated to an energy of 200 GeV per nucleon, What is the speed of each Au nucleus just before collision
What is the rate of heat flow into a system whose internal energy is increasing at the rate of 45 W, given that the system is doing work at the rate of 165 W
A long, straight wire of length 1.3 m carries current I = 3.1 A. what is the magnitude of the force on the wire
A car of mass 1.8 x10^3 kg is travelling east at a speed of 28m/s along a horizontal roadway. When its brakes are applied, the car stops in 5.8s. What is the average horizontal force exerted on the car even as it is braking.
A uniform line of charge that is 20.0 cm long has a total charge of -6.00 ?C. What is the electrostatic force on the electron
A prescription for a corrective lens calls for +1.50D. The lensmaker grinds the lens from a "blank" with n = 1.56, What should be the radius of curvature of the other surface
You are given a pendulum composed of a 0.028 kg mass on the end of a 0.47 m long massless string. compute the tension in the string when the mass is at the release point, ? = 48°
Illustrate what is the frictional force acting on the disk? The disk will slide off the turntable if it is located at a radius larger than 16 cm from the axis of rotation. What is the coefficient of static friction?
A 8 m x 11 m swimming pool slopes linearly from a 1 m depth at one end to a 3.8 m depth at the other. What is the mass of water.
small ferryboat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, What is the weight of the truck
A step-up transformer is connected to a generator that is delivering 139 V and 110 A. what voltage is across the secondary
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